Store retailers have no choice but to participate in the trend of consumers using mobile devices in stores to compare prices with other retailers over the web, a new study says. For example, stores can place QR codes in product displays to let shoppers get more details and provide mobile apps to extend special in-store offers.

Store retailers have no choice but to participate in the trend of consumers using mobile devices in stores to compare prices with other retailers over the web, a new study says. For example, stores can place QR codes in product displays to let shoppers get more details and provide mobile apps to…